With the rack in the middle position, preheat the oven to 180 °C (350 °F). Line a 20-cm (8-inch) square pan with parchment paper, letting it hang over both sides. Butter the other two sides. Set aside.
In a bowl, combine flour and 60 ml (¼ cup) of sugar. Add 90 ml (6 tablespoons) of butter and combine with an electric mixer until texture is grainy. Press onto bottom of the pan. Bake for about 20 minutes or until edges are lightly browned.
Meanwhile, in a saucepan, bring syrup, cream, and pecans to a boil with remaining butter and sugar and stir. Simmer for 2 minutes. Pour into pan over warm crust and bake for 20 minutes. Let cool. Run a thin blade around pastry and let cool completely. Remove from pan and cut into 36 squares. Store in an airtight container at room temperature for up to 2 weeks or freeze.
You can use unsalted butter and add 0.5 ml (⅛ teaspoon) of salt to the flour mixture and a pinch of salt to the syrup mixture.
Recipes with the "Healthy Pick" stamp have been evaluated by a registered dietitian member of the Ordre professionnel des diététistes du Québec.